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A double convex lens has two surfaces of...

A double convex lens has two surfaces of equal radii R and refractive index m=1.5, we have

A

`f=R/2`

B

`f=R`

C

`f=-R`

D

`f=2R`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Two plano-convex lenses of radii of curvature R and R and refractive index 1.5 will have equivalent focal length equal to R, if they are placed

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